plasma-framework/plasma.cpp

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/*
* Copyright 2005 by Aaron Seigo <aseigo@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <plasma/plasma.h>
#include <QDesktopWidget>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <plasma/containment.h>
#include <plasma/view.h>
namespace Plasma
{
qreal scalingFactor(ZoomLevel level)
{
switch (level) {
case DesktopZoom:
return 1;
break;
case GroupZoom:
return 0.5;
break;
case OverviewZoom:
return 0.2;
break;
}
// to make odd compilers not warn like silly beasts
return 1;
}
Direction locationToDirection(Location location)
{
switch (location) {
case Floating:
case Desktop:
case TopEdge:
case FullScreen:
//TODO: should we be smarter for floating and planer?
// perhaps we should take a QRect and/or QPos as well?
return Down;
case BottomEdge:
return Up;
case LeftEdge:
return Right;
case RightEdge:
return Left;
}
return Down;
}
QPoint popupPosition(const QGraphicsItem *item, const QSize &s)
{
QGraphicsView *v = viewFor(item);
if (!v) {
return QPoint(0, 0);
}
QPoint pos = v->mapFromScene(item->scenePos());
pos = v->mapToGlobal(pos);
//kDebug() << "==> position is" << item->scenePos() << v->mapFromScene(item->scenePos()) << pos;
Plasma::View *pv = dynamic_cast<Plasma::View *>(v);
Plasma::Location loc = Floating;
if (pv) {
loc = pv->containment()->location();
}
switch (loc) {
case BottomEdge:
pos = QPoint(pos.x(), pos.y() - s.height());
break;
case TopEdge:
pos = QPoint(pos.x(), pos.y() + (int)item->boundingRect().size().height());
break;
case LeftEdge:
pos = QPoint(pos.x() + (int)item->boundingRect().size().width(), pos.y());
break;
case RightEdge:
pos = QPoint(pos.x() - s.width(), pos.y());
break;
default:
if (pos.y() - s.height() > 0) {
pos = QPoint(pos.x(), pos.y() - s.height());
} else {
pos = QPoint(pos.x(), pos.y() + (int)item->boundingRect().size().height());
}
}
//are we out of screen?
QRect screenRect =
QApplication::desktop()->screenGeometry(pv ? pv->containment()->screen() : -1);
//kDebug() << "==> rect for" << (pv ? pv->containment()->screen() : -1) << "is" << screenRect;
if (pos.rx() + s.width() > screenRect.right()) {
pos.rx() -= ((pos.rx() + s.width()) - screenRect.right());
}
if (pos.ry() + s.height() > screenRect.bottom()) {
pos.ry() -= ((pos.ry() + s.height()) - screenRect.bottom());
}
pos.rx() = qMax(0, pos.rx());
return pos;
}
QGraphicsView *viewFor(const QGraphicsItem *item)
{
if (!item->scene()) {
return 0;
}
QGraphicsView *found = 0;
foreach (QGraphicsView *view, item->scene()->views()) {
if (view->sceneRect().intersects(item->sceneBoundingRect()) ||
view->sceneRect().contains(item->scenePos())) {
if (!found || view->isActiveWindow()) {
found = view;
}
}
}
return found;
}
} // Plasma namespace